<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Title</title>
    <link rel="stylesheet" href="./css/5.css">
</head>
<body>
<div id="out">
    <div class="in">inner</div>
    <div class="in">inner2</div>
</div>
</body>
</html>
